34 results about "Polydiacetylenes" patented technology

Methods and compositions are provided comprising ingestibles and a thermochromic composition which is informative as to the temperature history of the ingestible, either prior or contemporaneous with use. Various solid or liquid ingestible compositions are provided for determining storage temperature, temperature of the user, temperature of the ingestible, particularly comestibles, and the like. Of particular interest are polydiacetylene polymers which may be formulated to provide compositions having transition temperature over a broad temperature range.

Supported three-dimensional arrays of a polydiacetylene backbone bonded to and supported by a solid support in a sample are provided. The bonding is achieved by providing a support having thiol and/or amine groups and epoxy groups and/or maleimide groups, and a polydiacetylene backbone containing the other of thiol and/or amine groups or the epoxy and/or maleimide groups for reacting with the corresponding thiol groups or epoxy groups and/or maleimide groups on the support; provided that when an amine is used the other group is an epoxy; and/or having a layer of a polyelectrolyte on the support; and/or having a multiple atom linker between the three-dimensional array of the polydiacetylene backbone and the solid support. The supported three-dimensional arrays can be used for detecting an analyte; for evaluating the organic/water partition coefficient and/or oral absorptivity and/or ability of a compound to diffuse into cell membranes and/or transcellular permeability properties of a compound and/or the ionization state of a compound and/or the volume of distribution of a compound and/or the distribution of a compound into different tissues and/or the partitioning of a compound into cell organelles by monitoring the change in the fluorescence or phosphorescence upon exposure to the compound and optionally comparing it to a known change in fluorescence or phosphorescence, respectively. The supported three-dimensional arrays can also be used to evaluate the ability of a compound to bind to a protein and for the detection of a plurality of different species.

Polydiacetylenes (PDAs) and PDA/ZnO nanocomposites based on the monomers: 10,12-pentacosadiynoic acid (PCDA), 10,12-tricosadiynoic acid (TCDA) and 10,12-docosadiynedioic acid (DCDA) monomers are chromatic chemical sensing agents for selected organic liquids. Thermochromically reversible compositions include PCDA and nanosize ZnO having a particle size range less than 100 nm.

The invention discloses a polydiacetylene-based thermotropic reversible color-change composite material which is prepared by the following steps: sufficiently dissolving a 10,12-pentdiacetylenic acidmonomer into a dimethyl sulfoxide-water mixed solution, further adding a surface hydroxylation inorganic oxide, performing ultrasonic treatment for 50-60 minutes on the mixed solution at 70-80 DEG C,cooling to 0-5 DEG C, leaving to stand to carry out self-assembled incubation so as to obtain a colorless supermolecule solution, and polymerizing the colorless supermolecule solution under radiationof ultraviolet rays, thereby obtaining a polydiacetylene/hydroxylation oxide blue solution. According to the material, surface polyhydric inorganic particles are prepared and reacted with hydrogen bonds of -COOH at a diacetylene acid molecule end group, and after self-assembling and ultraviolet ray radiation polymerization, a universal thermotropic reversible color-change composite material of a polydiacetylene/hydroxylation inorganic matter system can be prepared. Since different polydiacetylene/hydroxylation inorganic matter composite materials have different thermotropic color-change temperatures, temperature controllability of a reversible color-change sensor can be achieved.

The invention belongs to the technical field of medical materials, and discloses an application of a photosensitizer based on aggregation-induced emission in cell imaging and photodynamic therapy. The applicaiton is characterized in that an aggregation-induced emission compound is covalently or non-covalently introduced into a polydiacetylene supramolecular system, and is spontaneously assembled and polymerized under the hydrophilic and hydrophobic action among molecules to obtain nanoparticles. According to the invention, AIE micromolecules are covalently/non-covalently introduced into a polydiacetylene supramolecular system by utilizing the excellent performance of diacetylene in the aspect of self-assembly, and the aggregation-induced emission supramolecular polymer is spontaneously assembled under the hydrophilic and hydrophobic action among molecules. The problem of aggregation fluorescence quenching is solved, and good water solubility is achieved. In addition, polymerization of diacetylene enables the aggregate structure to be rigidified, and leakage of the fluorescent dye can be prevented, so that a novel nanostructure with a clear structure is developed. The invention discusses the application of the supramolecular luminescent nano material in cell imaging and photodynamic therapy for the first time, and realizes integration of diagnosis and treatment.

This organic EL display device (100) is provided with an element substrate which comprises multiple pixels and which comprises organic EL elements (3) arranged in each pixel and bank layers (48) defining the pixels, and a thin-film sealing structure (10) which covers the pixels. The thin-film sealing structure includes a first inorganic barrier layer (12), and an organic barrier layer (14) in contact with the upper surface or lower surface of the first inorganic barrier layer. The multiple pixels include red pixels, green pixels and blue pixels, and further have a first polydiacetylene layer (52a) which exhibits a blue color and which is provided selectively on a second inorganic barrier layer (16) of the thin-film sealing structure on blue pixels, and a second polydiacetylene layer (52b) which exhibits a red color and which is provided selectively on the thin-film sealing structure on red pixels. The first and second polydiacetylene layers are a polymer of 10,12-pentacosadiynoic acid.

Moisture sensing color change compositions are built of nanofibers of suitable small dimension based on diacetylene monomers that are polymerized in situ in a dried film containing a hygroscopic polymer that is bound to the nanofibers either directly or through crosslinkers.

The invention discloses a preparation method of fluorescein functionalized polydiacetylene vesicles capable of regulating and controlling colorful fluorescence emission and construction of the molecular logic gates of the fluorescein functionalized polydiacetylene vesicles, and belongs to the technical field of organic conjugated polymer wave assembly. The invention aims to solve the problems of complex preparation conditions, higher pH control requirements, low sensitivity of the functionalized base material, higher external interference and the like of the conventional fluorescence-regulatedfunctionalized base material. According to the invention, diacetylene and fluorescein groups are combined with each other to prepare the polydiacetylene composite vesicle; on the basis of the effectsof red phase and blue phase transformation of polydiacetylene under external stimulation and response of a fluorescein group to external pH value change, and a colorful fluorescence emission method for multi-stimulation of color and fluorescence emission change regulation of polydiacetylene and the fluorescein group is achieved. The composite vesicle is simple in preparation process, excellent influorescence regulation and control performance, simple and convenient in fluorescence regulation and control operation process, strong in operability, strong in environmental interference resistanceand sensitive and rapid in system response.

The invention discloses a preparation of a sunlight-driven thermochromic material. The preparation comprises the following steps: synthesizing different resonance wavelengths of gold nanoparticles by utilizing a seed-growth solution method, preparing a gold nanoparticle water solution after mixing, and enabling an absorption spectrum of the gold nanoparticle water solution to be consistent with a sun emission spectrum; synthesizing diacetylene vesicles by utilizing a heating-ultrasound-self assembly method, inducing a topology reaction under ultraviolet light of which the wavelength is 254 nm, and forming a polydiacetylene vesicle colloidal solution; mixing the gold nanoparticle water solution and the polydiacetylene vesicle colloidal solution with a polyvinyl alcohol solution obtained through heating dissolution, preparing a thin film, and airing in a shade and ventilated place under room temperature, thus obtaining the sunlight-driven thermochromic material. According to the preparation disclosed by the invention, the defect of an existing thermochromic material that a heat source is required to be additionally added is abandoned, the sunlight is directly utilized as a driving force, and a thermochromic material is changed into sunlight-controlled photochromic material; the temperature of a photothermal conversion effect is controllable, discoloration is sensitive, the contrast is large, application of the sunlight-driven thermochromic material is more convenient and relaxed, and the application field of the sunlight-driven thermochromic material is broadened.

The invention provides a preparation method of chiral polydiacetylene. According to the preparation method, cysteine modified metal nanometer particles are added onto the surface of a diacetylene molecular film drop by drop, and then achiral ultraviolet irradiation is carried out so as to obtain chiral polydiacetylene. It is found in results that in polymerization process, diyne molecules possess adsorption difference on left-hand circularly polarized light and right-hand circularly polarized light, dropwise adding of the cysteine modified metal nanometer particles is capable of converting achiral ultraviolet light into a chiral light source, and inducing monomer polymerization, so that helical structures of polydiacetylene are formed. It is found through study on the influences of two single wavelength achiral ultraviolet lights at 254 and 313nm on polydiacetylene optical activity that, in CD signals, the directions of continuous double peaks are completely opposite. The preparation method can be combined with conventional ink-jet printing technology and lithography technology to realize construction of chiral patterns, realize control on difference micro-area chirality; and at the same time, the chirality of the obtained polydiacetylene is high, and the polydiacetylene can be used in identification of chiral small molecule configurations.

A wetness indicating composition can include a mixing solvent including water and a water-miscible volatile organic solvent. The wetness indicating composition can also include an amphiphilic polydiacetylene and a hydrophobic binder. In some embodiments, the wetness indicating composition can be applied to a substrate and serve as a wetness indicator for an absorbent article.

The present invention relates to colorimetric polydiacetylene (PDA) sensor arrays for detection of analytes and levels thereof in aqueous solutions. In particular the present invention relates to methods of characterizing an aqueous solution for at least one analyte, comprising the steps of a) providing a sensor array comprising at least two different poly-diacetylenes, wherein said poly-diacetylenes are spatially separated and individually addressable, b) contacting said sensor array with a sample of said aqueous solution, c) measuring the colorimetric response of said poly-diacetylenes to the aqueous solution, wherein said poly-diacetylenes are polymerized from a composition comprising one or more diacetylene monomer(s) said poly-diacetylenes are capable of a colorimetric response upon contact with said analyte, and wherein the at least one analyte is selected from the group consisting of an organic molecule with a molecular weight below 2000 g/mol, salts thereof and an inorganic salt.

The invention provides a method for detecting silver ions. The method specifically comprises the following steps: dropwise adding an ethanol solution of 10, 12-pentacosadiynoic acid into an aqueous solution of ethylene diamine tetraacetic acid under the condition of stirring at room temperature in a dark place by adopting a vesicle suspension liquid, and then standing the suspension liquid overnight at low temperature, so that the suspension liquid is self-assembled to obtain a colorless supramolecular suspension liquid; and then polymerizing the colorless supramolecular suspension liquid under ultraviolet radiation to obtain a blue polydiacetylene vesicle suspension liquid. Compared with other detection methods, the polydiacetylene vesicle suspension liquid designed by the invention can be used for visual detection of Ag < + > in a water environment, does not need complex biochemical modification, does not need large-scale instrument equipment and a tedious sample pretreatment process, is relatively low in detection cost, and can realize rapid real-time analysis.

An organic EL display device (100) includes a plurality of pixels, and also includes an element substrate including organic EL elements (3) respectively located in the plurality of pixels and a bank layer (48) defining each of the pixels; and a thin film encapsulation structure (10) covering the plurality of pixels. The thin film encapsulation structure includes a first inorganic barrier layer (12) and an organic barrier layer (14) in contact with a top surface or a bottom surface of the first inorganic barrier layer. The plurality of pixels include a red pixel, a green pixel and a blue pixel. The organic EL display device further includes a polydiacetylene layer (52) selectively provided on a second inorganic barrier layer (16) of the thin film encapsulation structure on the blue pixel and exhibiting a blue color. The polydiacetylene layer is a polymer of 10,12-pentacosadiynoic acid.